Finding the Fourth Proportional to 52,842.72, 79,147.80 and 49,931.22

Step by Step Solution

1. Step 1: Write the proportion equation
   52,842.72 : 79,147.80 = 49,931.22 : x
2. Step 2: Convert to fraction form
   52,842.72/79,147.80 = 49,931.22/x
3. Step 3: Cross multiply
   52,842.72x = 79,147.80 × 49,931.22
4. Step 4: Simplify right side
   52,842.72x = 3,951,946,214.32
5. Step 5: Solve for x
   x = 3,951,946,214.32/52,842.72
6. Step 6: Final answer
   x = 74,786.96